Metallic packing.



J. M. RHODES. METALLIC PACKING. 7 APPLICATION FILED NOV.19, 1908.

Pzitented Aug.3,190.

JOHN M. menus, or DALLAS, Texas.

mn ranrirc resi ns.

Specification of Letters Patent.

Patented. Aug. 3, 1909.

Application filed November 19, R508. Serial No. easier.

To all whom it may concern:

Be it known that I, JOHN M. Ensure, a citizen of the United States,'residing at Dallas, in the county of Dallas and State of Texas, have invented certain new and useful Improvements in Metallic Packing, 01" which the following is a specification.

My invention relates to metallic packing for piston rods and other rods and shafts and more particularly to packing composed of sectional rings of metal and. rings of rubber, and the object is to provide such packing and to provide the packing with shields to protect the rubber rings. lVhen such packing is placed on rods that operate in oil, the oil attacks the rubber and soon destroys the rubber rings or eats the rubber rings so that therings are beaten againsi the metalrings and the wall of the packing bok until the rubber rings are Worthless.

One-of the objects of this invention is to provide shields for the rubber rings which will protect the rings from the oil and which will not impair the vibrations of the packin metallic ring, the outside surface being shown- Fig. 3 is a. similar View, but showing the inside surface. Fig. 4-1liustrates a variation in the shields for the rubber rin s,

this it ure showing an edge view of a shie (l and a so a cliainetrical section of a. shield. Fir. 5 is a side elevation of a shield, such as 18 shown in Fig. i. Fig. 6 is an edge view of a shield, of the character of shield shown in Fig. 4, which is necessary-for the .end of the packing box. Fig. 7 illustrates the mannor of placing the shields, shown in Figs. 4 to 6, on the packing rings.

Similar characters of reference are used to indicate the same parts throughout the several views.

This invention includes a plurality or" metal rings composed of sections 1 which are iiexibly connected together by small soft wires 2. Each ring, Whenconneeted by Wires 2, has a flat side a and a curved side 7). 2.

Other objects and advantages will be fully packing ring is formed by'placing the fiat faces of two rings together to be placed on the rod.

8 indicates a rod of the ordinary type on which the packing is used. The metallic rings are spaced apart by rings of soft rubber and rings 3 of asbestos or fibrous material which are molded with the rubber rings 4. The asbestos rings-6 protect the rubber A} from the oil about the rod 3. The packing rings of metal are held or spaced from the packing box 8 and gland. S) by narrow rings 5 of rubber and rings 7 of asbestos, the rings 5 and 7 being molded to gether. The gland 9 may be forced against the packing by screw bolts 10 which engage threaded perforations in the rim of the packing box. The asbestos rings or shields 6 and 7 do not come in contact with the shaft 3. Five complete packing rings are shown in Fig. l of the drawings. It will be understood that any number of packing rings may be used. The packing rings are made up of two metal sectional rings and in placing the two ri s together the joints of the sections are br iron, as shown in Figs. 1 and 7, so steam or gas will not pass through the rings.

The rubber rings 4- provicle for the necessary vibration of the aching, and asbestos rings 6 prevent the oii about the shaft from destroying the utility of the rubber. It is preferable to mold the rubber rings and the asbestos rings together.

l show a variation in the shields ior protecting the rubber from attack by the oil. ln t to 7 inclusive of the drawings, 1 illustrate a shield composed of thin sheet metal. The packing rings composed 0t sections 1 are spaced apart by shields it which rings are substantiall V-shaped in cross section, as shown. Eat-n ring 11 is made of a plurality of sections which telescope togather, as shown at 12. The rubber rings 14; cod in the exterior annular grooves shields and engage the outer portions metal rings. The thin sheet metal 5 ll prevent the oil from attacking the rubber.

Having fully described my invention what I claim as new and desire to secure by Let ters Patent, is,

in a packing box of the character described, f aching for rods'or shafts comprising a plurality of metal rings. each formed of sections fienil lycoi1nertcal together, rubber rings betr can the said metal rings and V I l i sand box and the inner edges thereof excend In testimony whereof I set my hand in 111g between the metal rings, and shields l the presence of two witnesses, this 10th day engaging the inner edges of said rubber I of November, 1908.

rings and extending partly on the sides JOHN M. RHODES. thereof between the rubber rings and the metal rings, peripheral portions of the meta! rings being exposed to said rubber rings.

' Vitnesses:

' ,4 S. A. TEMPLE,

YA. InJAoKsoN. 

